The Audi R8 is still a stunning sight out on the roads but excitement is starting to dry-up, with traditionally long waiting lists now just withering to a month or two in most markets. To drum up interest once again, and attract new customers, Audi plans to launch several new versions over the next 12 months, including a new ‘Spider’ convertible as well as a high-performance RS variant.

Before these arrive, however, Audi will start selling the R8 with a second engine option. Joining the current 420hp (313kW) and 317lb-ft (430Nm) 4.2L V8 version is the new V10 model powered by the naturally-aspirated 5.2L engine found in the S6. Making its world debut at last month’s Detroit Auto Show, the new V10 R8 delivers 525hp (386kW) and 391lb-ft (530Nm) of torque and is capable of sprinting from 0-62mph (100km/h) in just 3.9 seconds and reaching a top speed of 196mph (316km/h).

Unfortunately, the car may not make it to the U.S. anytime soon. Speaking with Edmunds, Audi spokesman Christian Bokich said the 5.2 FSI “isn't yet fully confirmed” for the U.S. and that its arrival wouldn’t be until the second half of 2010 at the earliest. The car goes on sale in Europe in the first half of this year.

If it does make it here before the late 2010 date, there is the chance that the current V8 model may eventually be phased out due to the expected lower demand.

2010 Audi R8 V10 5.2 FSI driving clip